Helmut Alt

3.4k citations

55 papers · 1.6k indexed · 1 hit paper · h-index 17

Impact in

Computer Graphics and Computer-Aided Design top 0.5%
- Computational Geometry and Mesh Generation
Signal Processing top 1%
- Data Management and Algorithms

Papers in ⓘ

Computer Graphics and Computer-Aided Design 31
- Computational Geometry and Mesh Generation 30
Computer Vision and Pattern Recognition 23
- Digital Image Processing Techniques 13
- Robotic Path Planning Algorithms 4

Co-authors: Michael Godau (3 shared papers)Carola Wenk (6 shared papers)Kurt Mehlhorn (8 shared papers)Günter Rote (6 shared papers)Alon Efrat (3 shared papers)Christian Knauer (7 shared papers)Emo Welzl (3 shared papers)Hubert Wagener (1 shared paper)
Journals: Computational Geometry (5 papers)Discrete & Computational Geometry (3 papers)SIAM Journal on Computing (3 papers)Algorithmica (2 papers)Theoretical Computer Science (2 papers)
Partner nations: Germany United States South Korea

In The Last Decade

Helmut Alt

55 papers receiving 1.5k citations

Hit Papers

align trajectories log scale

COMPUTING THE FRÉCHET DISTANCE BETWEEN TWO POLYGONAL CURVES 1995 · 623 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

1995 International Journal of Computational Geometry & Applications

Peers

Countries citing papers authored by Helmut Alt

Since Specialization

Citations

This map shows the geographic impact of Helmut Alt's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Helmut Alt with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helmut Alt more than expected).

Fields of papers citing papers by Helmut Alt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helmut Alt. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Helmut Alt. The network helps show where Helmut Alt may publish in the future.

Co-authors

The 25 scholars most cited alongside Helmut Alt, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Helmut Alt Line = papers co-authored together Helmut Alt links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 55 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	COMPUTING THE FRÉCHET DISTANCE BETWEEN TWO POLYGONAL CURVES International Journal of Computational Geometry & Applications ·Helmut Alt, Michael Godau Hit paper breakdown →	1995	623
2	Congruence, similarity, and symmetries of geometric objects Discrete & Computational Geometry ·Helmut Alt, Kurt Mehlhorn, Hubert Wagener, Emo Welzl	1988	112
3	Matching planar maps Journal of Algorithms ·Helmut Alt, Alon Efrat, Günter Rote, Carola Wenk	2003	111
4	Approximate matching of polygonal shapes Annals of Mathematics and Artificial Intelligence ·Helmut Alt, B Behrends, Johannes Bl�mer	1995	96
5	Comparison of Distance Measures for Planar Curves Algorithmica ·Helmut Alt, Christian Knauer, Carola Wenk	2003	68
6	New algorithmic approaches to protein spot detection and pattern matching in two-dimensional electrophoresis gel databases Electrophoresis ·Klaus‐Peter Pleißner, Frank Hoffmann, Klaus Kriegel, Carola Wenk, Susan Wegner, Anders Sahlström, H. Oswald, Helmut Alt, Eckart Fleck	1999	62
7	Deterministic Simulation of Idealized Parallel Computers on More Realistic Ones SIAM Journal on Computing ·Helmut Alt, Torben Hagerup, Kurt Mehlhorn, Franco P. Preparata	1987	57
8	Minimum-cost coverage of point sets by disks Helmut Alt, Esther M. Arkin, Hervé Brönnimann, Jeff Erickson, Sándor P. Fekete, Christian Knauer, Jonathan Lenchner, Joseph S. B. Mitchell, Kim Whittlesey	2006	49
9	Measuring the resemblance of polygonal curves Helmut Alt, Michael Godau	1992	45
10	Approximate matching of polygonal shapes (extended abstract) Helmut Alt, B Behrends, Johannes Blömer	1991	42
11	The Voronoi diagram of curved objects Helmut Alt, Otfried Schwarzkopf	1995	42
12	COMPUTING THE HAUSDORFF DISTANCE BETWEEN CURVED OBJECTS International Journal of Computational Geometry & Applications ·Helmut Alt, Ludmila Scharf	2008	35
13	Matching Shapes with a Reference Point International Journal of Computational Geometry & Applications ·Oswin Aichholzer, Helmut Alt, Günter Rote	1997	30
14	The Voronoi Diagram of Curved Objects Discrete & Computational Geometry ·Helmut Alt, Otfried Cheong, Antoine Vigneron	2005	27
15	Matching planar maps Symposium on Discrete Algorithms ·Helmut Alt, Alon Efrat, Günter Rote, Carola Wenk	2003	20
16	Can We Compute the Similarity between Surfaces? Discrete & Computational Geometry ·Helmut Alt, Maike Buchin	2009	19
17	Computing the largest inscribed isothetic rectangle Canadian Conference on Computational Geometry ·Helmut Alt, David Hsu, Jack Snoeyink	1994	16
18	Efficient Algorithms: Essays Dedicated to Kurt Mehlhorn on the Occasion of His 60th Birthday Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)) ·Susanne Albers, Helmut Alt, Stefan Näher	2009	16
19	An Application of Point Pattern Matching in Astronautics Journal of Symbolic Computation ·Gerald Weber, Lars Knipping, Helmut Alt	1994	13
20	Matching shapes with a reference point Refubium (Universitätsbibliothek der Freien Universität Berlin) ·Helmut Alt, Oswin Aichholzer, Günter Rote	1994	13

About Helmut Alt

Helmut Alt is a scholar working on Computer Graphics and Computer-Aided Design, Computer Vision and Pattern Recognition, Signal Processing, Computational Theory and Mathematics and Computational Mechanics, having authored 55 papers that have together received 1.6k indexed citations. Recurring topics across this work include Computational Geometry and Mesh Generation (30 papers), Digital Image Processing Techniques (13 papers), Data Management and Algorithms (9 papers), 3D Shape Modeling and Analysis (8 papers), Advanced Numerical Analysis Techniques (8 papers), Optimization and Packing Problems (6 papers), Algorithms and Data Compression (6 papers) and Robotic Path Planning Algorithms (4 papers). The work is most often cited by research in Computer Graphics and Computer-Aided Design (464 citations), Signal Processing (501 citations), Computer Vision and Pattern Recognition (485 citations), Geography, Planning and Development (102 citations) and Transportation (110 citations). Helmut Alt has collaborated with scholars based in Germany, United States and South Korea. Frequent co-authors include Michael Godau, Carola Wenk, Kurt Mehlhorn, Günter Rote, Alon Efrat, Christian Knauer, Emo Welzl, Hubert Wagener, Otfried Schwarzkopf and Torben Hagerup. Their work appears in journals such as Computational Geometry, Discrete & Computational Geometry, SIAM Journal on Computing, Algorithmica and Theoretical Computer Science.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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